حَدَّثَنِي عَمْرُو بْنُ عَلِيٍّ أَبُو حَفْصٍ، قَالَ: سَمِعْتُ مُعَاذَ بْنَ مُعَاذٍ يَقُولُ: قُلْتُ لِعَوْفِ بْنِ أَبِي جَمِيلَةَ: إِنَّ عَمْرَو بْنَ عُبَيْدٍ حَدَّثَنَا عَنِ الْحَسَنِ أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ: «مَنْ حَمَلَ عَلَيْنَا السِّلَاحَ فَلَيْسَ مِنَّا». قَالَ: كَذَبَ وَاللَّهِ عَمْرٌو، وَلَكِنَّهُ أَرَادَ أَنْ يَحُوزَهَا إِلَى قَوْلِهِ الْخَبِيثِ.
Translation: Muʿādh b. Muʿādh told ʿAwf b. Abī Jamīlah that ʿAmr b. ʿUbayd narrated from al-Ḥasan the Prophetic statement, “Whoever takes up arms against us is not of us.” ʿAwf swore that ʿAmr had lied and said he sought to draw it toward his objectionable doctrine.
The dispute concerns the attribution «from al-Ḥasan» and its deployment in argument. A known sound hadith may still be falsely ascribed to a particular teacher or placed in a problematic interpretive context.